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Make sure your hardware meets the minimum requirements for running Blender 2.80. The section about GPU requirements is particularly important.


  Supported Graphics Cards
  
  These requirements are for basic Blender operation, rendering using
  the GPU requires slightly different requirements. Always make sure to
  install the latest drivers from the graphics card manufacturer
  website.
  
  
  NVIDIA: GeForce 200 and newer, Quadro Tesla architecture and newer, with NVIDIA drivers (list of all GeForce and Quadro GPUs)
  AMD: GCN 1st gen and newer (list of all AMD GPUs)
  Intel: Haswell and newer (list of all Intel GPUs)
  macOS: version 10.12 or newer with supported hardware
  


If your hardware meets the minimum requirements, you're likely having issues with your graphics driver and it has to be updated.